Propelling device.



B. SCHMELZER.

PROPELLINGDEVICE.

APPLICATION FILED Jun 3. 1915.

Patented Sept. 12, 1916.

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A TTOR/VEV B. SCHM'ELZER.

PROPELLING DEVICE.

APPLICATION FILED JULY 3,1915.

1 ,1 97,766. PatentedSept. 12,1916.

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WITNESSES: 7 lNl/E/VTOR dill/1a SCI/M54254 Q. in

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BRUNO SCHMELZER, OF JERSEY CITY, NEW JERSEY.

EROPELLING- DEVICE.

To all whom it may concern:

Be it known that I, BRUN SOHMELZER, a subject of the Emperor of Germany,and a resident of Jersey City, in the county .of Hudson and State of NewJersey, have invented certain new and useful Improvements in PropellingDevices, of which the following is a specification.

Modern aeronautics have created a demand for propelling devicesresulting in an unusual study of aerodynamics and the development ofmechanism for moving a body through an elastic fluid.

The present invention relates generally to this class of mechanism, moreparticularly, however, to those of the rotary propeller type, and itspurpose is to employ an element, which resembles in shape theconchospiral shells of certain monovalve Mollusca forming a fluidimpeller of great simplicity having a high degree of efficiency.

In the drawings, illustrating a few of the constructions ;Figure 1, is avertical cross section of one form of the mechanism, Fig. 2, is a frontelevation, viewed from the right hand side of Fig. 1, Fig. 3, is a planview of the invention, Fig. 4, is a side elevation of one form of thepropeller, and Figs. 5, 6, 7 and 8 are views respectively similar to thecorresponding views Figs. 1 to 4, inclusive, of a modified constructionof the invention.

The structure comprises a su port 1, movable on rollers or casters 2. Itis understood that the structure shown, is intended as an equivalent ofany vehicle moving on roadways, tracks, or otherwise, including boatsand vessels on water, and airships of'the lighter-tlian-air, as well asheavier-than-air type. The support carries a pair of brackets 3, 4,having bearings 5, 6 at their upper ends for a shaft 7, to which thereis secured the propeller 8. The latter is rotatable in a casing 9,located in front, and embracing approximately one entire half of thespace through which the propeller rotates. The casing may be bounded byspherical, paraboloidal, or otherwise curved, surfaces, two forms ofwhich are shown in the several figures of the drawings. The casing issecured to and carried by the brackets, 3, 4,

Specification of Letters Patent. Patented Sept. 12,1916. Applicationfiled July 3, 1915.

Serial No. 37,860.

through fastening means 10, 11', and a bracket 12 may form an additionalsupport. The shaft 7 is provided with a pulley 13, which is rotated bymeans of a belt 14, or otherwise, from a prime mover 15.

The essence of the invention rests in the peculiar shape andconstruction of the propellerS. One of its simple forms is shown inFigs. 5 to 8, inclusive, and comprises two or more members 16, 17,similar to a truncated cornucopia, or the concho-spiral shell ofmonovalve Mollusca. The outer, wider openings 18, 20, of one member, andthe inner,'smaller openings 19, 21, of the other member, are preferablylocated in the same axial plane. When more than two members areemployed, these respective openings are then located in correspondingangularly spaced-apart axial planes.

Figs. 1 to 4, inclusive, illustrate the members, divided into aplurality of overlapping scale-like elements 22, 23, decreasing in sizefrom the larger, toward the smaller opening of each member, separated byopen spaces 24, 25, as'clearly shown in Fig. 1, each element being heldin its respective position, by flat circular plates rigidly attached attheir outer sides, the plates being. provided with hubs keyed to theshaft 7.

When rotation is imparted to the propellers 8, the effect is to forcethe structure to move in a direction opposite to the thrust of thepropellers, the force being proportionate to their speed and magnitude.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. In a vehicle, the combination with a truck, a power source and ashaft driven thereby, of a pair of conchoidal vanes secured to saidshaft at opposite points thereon, and a casing fixed to said truckpartially enveloping said vanes.

2. In a vehicle, the combination with a truck, a powersource and a shaftdriven thereby, of two diametrically opposite conchoidal vanes ofconstantly decreasing internal area secured to said shaft, and a fixedshield having an open front extending past the axial center of saidshaft.

3. In a vehicle, the combination with a Wheeled truck, a power sourceand a shaft Signed at New York, in the county of driven thereby, of apair of vanes each com- New York, and State of New York, this prised ofa plurality of overlapping con- 19th day of June A. D. 1915.

choidal segments, said vanes being oppo- BRUNO SCHMELZER. sitelydisposed upon said shaft, and a casing Witnesses: fixed to said truckhaving lateral extensions FRANCIS, J. NEKARDA,

passing the center of rotation of said vanes. ERICH JoEs'rL.

